Hello, I will be upgrading my Verizon line to the iPhone 5 within the next two weeks. I will not be using the device in the USA until December but will use it with my other cell carrier in Costa Rica in the interim. Is it possible to activate the iPhone 5 from another country so that when I land at LAX I just need to pop in the Verizon SIM? I have a contract plan with Verizon and I have a contract plan with my Costa Rica carrier. The iPhone is a Verizon iPhone 5.